WO2017001462A1

WO2017001462A1 - Stop mechanism

Info

Publication number: WO2017001462A1
Application number: PCT/EP2016/065118
Authority: WO
Inventors: David Rose; Philipp Werner
Original assignee: Vibracoustic Gmbh
Priority date: 2015-06-30
Filing date: 2016-06-29
Publication date: 2017-01-05
Also published as: US20180186204A1; DE102015110546A1; CN107735272A; EP3288787B1; US10556475B2; EP3288787A1

Abstract

The invention relates to a stop mechanism (10) for limiting a vertical spring deflection of a motor vehicle leaf spring that is mounted on an axle member, said stop mechanism (10) comprising a stop (12) that limits a vertical movement of the at least one leaf spring, a support structure (14) for supporting and mounting the stop (12) on a vehicle support (16), and a guiding device (18) for receiving and guiding at least one cable, a line (20) and/or a holder (48); according to the invention, the guiding device (18) is secured to the support structure (14).

Description

stop device

The present invention relates to a stop device for limiting a vertical deflection of an axle body attached to a leaf spring of a motor vehicle.

In motor vehicles, in particular commercial vehicles, which have a leaf-sprung axle, there is a risk that when driving over bumps or when braking the axle is strongly compressed. This can lead to an overuse of the leaf spring. This overuse is due to an undefined, S-shaped deflection of the leaf spring. To avoid overstressing the leaf spring, a stop device of the type mentioned is used. For this purpose it is known to attach the stop device to a vehicle carrier of the motor vehicle.

Thus, DE 35 15 130 C2 shows a rubber stopper, which is fastened by means of a retaining plate to a vehicle carrier of a commercial vehicle.

Furthermore, DE 36 20 883 C2 discloses a stop device which has a stop holder formed from two solid steel plates with a receiving opening into which a rubber stopper is inserted. The stop bracket is mounted on a vehicle carrier such that the rubber stopper rests against the vehicle carrier and is fixed in the receiving opening.

Furthermore, JP 52 70 226 A discloses a stop device with a rubber stopper which is fastened to a metal support. The carrier in turn is bolted to a vehicle carrier.

The known from the prior art stop devices have a design due to a high weight. Furthermore, a known stop device 1 is shown in Fig. 1, which consists of a solid T-shaped steel beam 2, which is provided at the end with a support plate 3, on which a rubber buffer 4 is arranged. The support plate 3 is supported by ribs 5 on the steel beam 2 to initiate the force acting on the rubber buffer 4 forces in the steel beam 2. The steel girder 2 is fastened to a vehicle carrier 6 via two screws (not shown). As can be seen in FIG. 1, the installation space available on the vehicle carrier 6 is cable lines 7. The cable lines 7 are prefabricated in retaining plates 8 and secured by means of these retaining plates 8 on the vehicle carrier 6.

Due to the high bending moments occurring this stop devices requires a heavy steel construction for mounting the rubber buffer on a vehicle side member. Due to this, this known stop device on a high weight, so that thus provided motor vehicle has a low payload and a high CO 2 emissions. In addition, the steel beam is made by forging, which requires a subsequent machining of the steel beam required. This post-processing is costly. In addition, the space on the vehicle side rail 6 is fully utilized for cable lines.

The present invention has for its object to provide a stop device of the type mentioned, which is made easier and less expensive by creating additional space.

To solve the problem, a stop device with the features of claim 1 is proposed.

Advantageous embodiments are the subject of the dependent claims.

In the context of the present invention, the leaf-sprung axle can have at least one leaf spring or a spring packet formed from a plurality of leaf springs.

According to one aspect of the invention, a stop device is provided for limiting vertical deflection of a leaf spring fastened to an axle body. proposed the of a motor vehicle. The stop device comprises a stop which limits the vertical movement of the leaf-sprung axis, a support structure for supporting and fixing the stop to a vehicle carrier and a guide device for receiving and guiding at least one cable, a line and / or a holder, wherein the guide means on the Support structure is attached. By attaching the guide device to the support structure of the space for the cable, various lines such as air lines, brake lines, hydraulic lines and / or their holding plates is laid so that additional space is created. This additional space can now be used to intercept the structure acting on the support bending moment and support the stop torque-free on the vehicle side rail. As a result, a heavy steel construction can be replaced by a lighter and more cost-effective support structure. Thus, the support structure may be formed as an aluminum extruded profile, which is optionally subsequently machined by machining. An aluminum extruded profile followed by subsequent machining is more cost-effective compared to a forged steel beam that has been post-machined. Due to the use of a lighter material for the support structure, the stop device has a lower weight, thereby increasing the payload of the motor vehicle and the CO2 emissions is reduced. The guiding device can be formed from a holding plate which accommodates at least one cable and / or one line or a cable package and / or line packet formed from a plurality of cables and / or lines. Furthermore, the cable and / or the cable or the cable package and / or the cable package may be coated with a protective sheath made of sheet metal or plastic.

Advantageously, the guide device is connected to the support structure such that it is arranged laterally on the support structure.

In an advantageous embodiment, the support structure is formed such that a portion of the support structure is supported on the vehicle carrier. Thereby, the force acting on the stopper force can be intercepted by the force is introduced evenly into the vehicle carrier via the support structure. As a result, the stop is supported torque-free. The support structure may have a support plate on which the stop is arranged, a first carrier, a second carrier, and a cross member interconnecting the two carriers. Advantageously, the second carrier is supported on the vehicle carrier. Further preferably, the support plate is arranged on the two carriers. The cross member can rest on the vehicle carrier. The two supports support the arranged on the support plate stop torque-free on the vehicle carrier. In particular, the second carrier, which is integrated in the supporting structure and is supported directly on the vehicle carrier, catches the bending moment acting on the stop and / or the first carrier. In the context of the invention, the first carrier may also be referred to as a stand bar. Preferably, the support plate, the carrier and the cross member are materially and / or materially connected to each other.

In an advantageous embodiment, the two carriers in a section on a conical shape. As a result, an improved support of the impact and improved absorption of the force acting on the stopper is possible. Preferably, the conical shape of the two carriers is designed such that the conical opening increases in the direction of the support plate.

In an advantageous embodiment, the support structure has a Befestigungsein- direction for attachment, preferably for releasable attachment, the guide device. About the fastening device, the attachment of the guide means to the support structure. The fastening device is advantageously arranged laterally on the support structure, in particular laterally on one of the supports.

The fastening device can be designed as a plug-in shaft into which a plug-in element connected or connectable with the guide device can be inserted. The integrated into the support structure insertion slot may have two cheeks, for example, form a groove and / or a slot. Preferably, the insertion shaft extends in the depth direction of the support structure. Further preferably, the insertion shaft extends in the depth direction over the entire length of the support structure. In the plug-in slot a projecting from the guide device male member can be used. The male element serves preferably as a fastener. The male member may be cohesively and / or non-positively connected to the guide device. The insertion element projecting from the guide device preferably has a shape corresponding to the insertion shaft, so that the insertion element can be positively inserted into the insertion shaft. Thus, for example, a hexagonal screw can be used as a male, the head can be used against rotation in the insertion slot. In a very narrow configuration of the insertion shaft, for example, a self-tapping screw can be screwed into the guide device for fastening the guide device. Furthermore, the insertion shaft can also be provided with undercuts. As a result, the guide device can be fastened to the insertion shaft by means of a clip connection. Through the undercuts, at least one clip element can get caught in the insertion shaft. The cheeks of the insertion shaft can protrude from the support structure, preferably be connected to the same material with the same material. Furthermore, the insertion shaft can be introduced into the support structure.

In an advantageous embodiment, the fastening device may be formed as at least one introduced into the support structure opening. Through the opening, a fastener, such as a clip, a cable binder or a pipe clamp, are passed, laterally on the guide device to the support structure, in particular the second carrier to attach. Advantageously, a plurality of openings can be introduced into the support structure. The openings can be introduced by a subsequent machining of the support structure.

Further advantageously, the guide device is formed as a material-locking with the support structure, preferably of the same material, connected insertion compartment. At least one cable and / or one cable, several cables and / or cables and / or a cable package and / or cable package formed from a plurality of cables and / or cables can be inserted into the insertion compartment. In an advantageous embodiment, the cable and / or the cable, the cables and / or the cables and / or the cable pact and / or the cable package are previously encased with a cable guide made of sheet metal or plastic and / or pre-assembled to avoid rubbing through, for example, the sharp saw edges of the carrier and / or the insertion compartment. The cable or cables pre-assembled with a cable guide are then inserted into the slot. In an advantageous embodiment, the insertion compartment is laterally connected to the support structure, in particular with the second carrier, materially connected. Further advantageously, the insertion compartment is connected to the support structure such that the insertion compartment rests on the vehicle carrier.

The insertion compartment can have an undercut in the region of an insertion opening. The undercut prevents slipping out of the inserted cable and / or the inserted line or the inserted lines or pre-assembled with a guide cable and / or line from the insertion compartment. Advantageously, the undercut is designed as a projecting from a wall of the insertion compartment in the insertion opening projection.

In an advantageous embodiment, the support structure is formed by means of extrusion, extrusion or injection molding. Preferably, the support structure is formed as an aluminum extruded profile. A designed as an aluminum extruded support structure with a possible subsequent machining finishing is inexpensive to manufacture.

Further advantageously, the support structure is formed of a metal, in particular a light metal, or a fiber-reinforced plastic. Advantageously, the support structure is made of aluminum. By using a light metal or a fiber-reinforced plastic, the stop device has a low weight, so that the payload of the motor vehicle increases and the CO2 emissions are reduced. In particular, a support structure made of aluminum compared to a steel construction has reduced by half reduced weight with a constant function.

In an advantageous embodiment, the stop is designed as a buffer arranged on the support plate of an elastomeric material. A buffer formed of an elastomeric material has good damping properties. The stop can be connected to the support plate cohesively and / or non-positively. The support structure may be connected to the vehicle carrier. Advantageously, the support structure is bolted to the vehicle carrier. For this purpose, the support structure, in particular the first carrier may be provided with openings, passed through the screws and screwed into openings formed on the vehicle carrier. Furthermore, the support structure can also be connected to the vehicle carrier in another way. For example, the support structure can be riveted to the vehicle carrier and / or welded.

Hereinafter, the stopper device and other features and advantages will be explained in more detail with reference to exemplary embodiments, which are shown schematically in the figures. Hereby show:

1 shows a cross section through a known stop device.

2 shows a cross section through a stop device according to a first embodiment;

3 is an enlarged view of the fastening device shown in Figure 3 with a trained as a hexagon plug.

4 is an enlarged view of another embodiment of a

Fastening device with a plug-in element designed as a screw;

5 shows a cross section through a stop device according to a second embodiment; and

6 shows a cross section through a stop device according to a third embodiment.

In Fig. 1, a stop device 10 is shown according to a first embodiment, which serves to limit a vertical deflection of an axle body attached to a leaf spring.

The stop device 10 has a stop 12, a support structure 14 for the support and attachment of the stop 12 on a vehicle carrier 16 and a Guide device 18 for receiving and guiding a pre-assembled cable package and / or a pre-assembled line package 20.

The support structure 14 is made as an extruded profile of a light metal, in particular aluminum. The support structure 14 has a support plate 22, a first support 24, a second support 26 and a cross member 28 interconnecting the two supports 24, 26.

The first carrier 24 has a first portion 30 and an approximately conical second portion 32. The first portion 30 is used to attach the stopper 10 to the vehicle carrier 16. For this purpose, the first portion 32 mounting holes 34, in which fasteners, not shown, in particular screws, can be introduced into to the vehicle carrier 16 corresponding openings. The second carrier 26 is supported on an upper side 36 of the vehicle carrier 16. The two carriers 24, 26 interconnecting cross member 28 rests on an upper side 36 of the vehicle carrier 16. The first portion 30 of the first carrier 24 and the second carrier 26 are approximately conical to each other and are connected to the support plate 22.

On the support plate 22, the stop 12 is arranged. The stopper 12 is formed as a buffer 38 of an elastomeric material. The buffer 38 is presently materially connected to the support plate 22. The buffer 38 may also be connected to the support plate 22, for example via a screw connection.

Since the second carrier 26 is supported on the top 36 of the vehicle carrier 16, the bending moment acting on the first carrier is intercepted in a stop of a leaf spring, so that the support plate 22, which serves as a substrate for the buffer 38, is supported torque-free.

In order to provide the installation space required for the second carrier 26 and the cross member 28, the second carrier 26 is provided with a fastening device 40, which is presently arranged laterally on the second carrier 26. The fastening device 40 is formed as shown in FIG. 2 as a Einsteckschacht 42, which is formed from two cheeks 44 a, 44 b. The cheeks 44a, 44b form a Groove, into which a male member 46 can be inserted, wherein the cheeks 44a, 44b have an approximately L-shaped profile in cross section.

As can be seen in FIG. 2, the guide device 18 has a retaining plate 48 into which the cable package and / or the line package 20 is inserted. The retaining plate 48 is connected to the male member 46, which serves as a fastener. The male member 46 may be non-positively and / or materially connected to the retaining plate 48. For fastening the retaining plate 48 to the second carrier 26, the male member 46 is inserted into the insertion slot 42, in particular inserted.

In an embodiment shown in Fig. 3, the male member 46 is formed as a hexagonal screw 50, the head 52 is inserted into the insertion slot 42 and the thread 54 is connected to the retaining plate 46. For attachment of the retaining plate 48 to the carrier 26, one or more hexagonal screws 50 or similar forms that allow an anti-rotation, can be used.

In the further embodiment of the fastening device 40 shown in FIG. 4, the cheeks 44a, 44b are formed as two thick ribs arranged close to one another, which form a groove in the narrow gap of which a self-tapping screw 56 can be screwed for fastening the retaining plate 48.

Furthermore, it is also conceivable to fasten the guide device 16 by means of a clip connection to the insertion shaft 42, in which clips, not shown, hook into an undercut formed by the cheeks 44a, 44b. In addition, it is also conceivable to introduce holes into the support structure 14, through which cable ties, clips or pipe clamps can be passed, to be fastened to the guide device 18 on the support structure 14.

In Fig. 5, a second embodiment of a stop device 10 is shown, which differs from the first embodiment in that the guide device 16 is formed as a laterally arranged on the second carrier 26 insertion compartment 58, the material-locking and materially connected to the second carrier 26 is. The insertion compartment 58 has a bottom 60, and a side wall 62 which is approximately parallel to the second carrier 26. In the insertion compartment 56, a pre-assembled cable package and / or a pre-assembled cable package 20 is used. The cable package and / or line package 20 may be encased with a guide made of sheet metal or plastic, in order to avoid rubbing through, for example, sharp saw edges of the support structure 14.

FIG. 6 discloses a third embodiment of a stop device 10, which differs in particular from the second embodiment in that the insertion compartment 58 has a projection 64 protruding from the side wall 62 in the region of an insertion opening 64. The projection 64 serves as an undercut to prevent slipping out of the cable package and or a line package 20 in the direction of the insertion opening 64.

By laying the attachment of the guide device 18 to the support structure 12 additional space on the vehicle carrier 16 is created. This additional space can be used to integrate a second carrier 26 in the support structure 14, which is supported on the top 36 of the vehicle carrier 16. The second carrier 26 intercepts a bending moment acting on the first carrier 24 and thereby supports the carrier plate 22 torque-free. This makes it possible to form the support structure 14 as a lightweight, low-cost extruded aluminum profile, so that the payload of a motor vehicle increases and the CO2 emissions are reduced.

List of references stop device

steel beams

substrate plate

rubber buffers

rib

Longitudinal beam

cable lines

Halteblech

stop device

attack

Support structure

launchers

guide means

Cable package and / or cable package

support plate

first carrier

second carrier

crossbeam

first section

second part

fastening opening

top

buffer

fastening device

insertion shaft

a cheek

b cheek

male

Halteblech Hex bolt

head

thread

self-tapping screw insertion compartment

ground

Side wall

insertion opening

head Start

Claims

claims

1 . A stop device (10) for limiting vertical deflection of a leaf spring of a motor vehicle fastened to an axle body with a stop (12) which limits the vertical movement of the leaf spring, a support structure (14) for supporting and fastening the stop (12) to a vehicle carrier ( 16) and a guide means (18) for receiving and guiding at least one cable, a line (20) and / or a holder (48), wherein the guide means (18) on the support structure (14) is fixed.

2. stop device according to claim 1, characterized in that the support structure (14) is formed such that a portion of the support structure (14) on the vehicle carrier (16) is supported.

3. Stop device according to claim 1 or 2, characterized in that the support structure (14) has a support plate (22) on which the stop (12) is arranged, a first carrier (24), a second carrier (26), the Supporting the support plate (22), and a cross member (28) interconnecting the two supports (24, 26).

4. An abutment device according to claim 3, characterized in that the two carriers (24, 26) extend conically in a section to each other.

5. Stop device according to one of the preceding claims, characterized in that the support structure (14) has a fastening device (40) for fastening the guide device (18).

6. An abutment device according to claim 5, characterized in that the fastening device (40) is designed as a Einsteckschacht (42) into which a with the guide means (18) connected or connectable male member (46) can be inserted.

7. Anschlagvornchtung according to claim 5 or 6, characterized in that the fastening means (40) as at least one in the support structure (14) introduced opening is formed.

8. An abutment device according to one of the preceding claims, characterized in that the guide device (16) as a with the support structure (14) connected to the insertion compartment (58) is formed.

9. stop device according to claim 8, characterized in that the insertion compartment (58) in the region of an insertion opening (64) has a rear section (66).

10. stop device according to one of the preceding claims, characterized in that the support structure (14) by means of extrusion, extrusion or injection molding is formed.

1 1. Stop device according to one of the preceding claims, characterized in that the support structure (14) is formed of a metal or a fiber-reinforced plastic.

12. A stop device according to one of the preceding claims, that the stop (12) as a on the support plate (22) arranged buffer (38) is formed of an elastomeric material.

13. A stop device according to one of the preceding claims, characterized in that the support structure (14) is connected to the vehicle carrier (16).